Definition
Reflectivity has two main meanings. First, in a *physical* sense, it describes the degree to which a surface reflects light or other radiation. Think of a mirror or a polished metal surface. Second, in a *personal* sense, it's similar to reflectiveness, referring to the quality of being thoughtful and introspective. It suggests a capacity for self-examination and a willingness to consider different perspectives. While reflectiveness emphasizes the habit of reflecting, reflectivity focuses on the *measurable degree* to which someone or something reflects.